Eons before Europeans arrived in North America, Native Americans cultivated the tobacco leaf for ceremonial activities and medicinal purposes for use during prayers and rituals. They presented the ...

Nicotine quickly enters your bloodstream. Your liver then breaks down nicotine into several byproducts, primarily cotinine. Depending on what you're testing, such as a blood, urine, saliva, or hair ...

The nicotine content in cigarettes varies significantly from brand to brand, but on average, a person absorbs 1–1.5 milligrams (mg) of nicotine from a cigarette stick. The above information comes from ...

The number of teens using electronic cigarettes grows every year, according to data from the National Institutes of Health. The rise in vaping has led to an uptick of students sneaking puffs in locker ...